50mm Pressure Gauges

50mm pressure gauges provide compact local pressure indication for industrial systems where space is limited, including machinery, panels, pipework and equipment enclosures. Their smaller dial size makes them suitable for pressure monitoring on hydraulic, pneumatic, water and general service applications where a larger gauge is not practical.

This collection is intended for replacement gauges, OEM equipment, maintenance use and new installations requiring a compact pressure gauge format. When selecting a gauge, check the pressure range, connection size and position, mounting style, media compatibility and dial visibility to ensure it suits the application and existing installation.

7 products

50mm Back Entry Industrial Pressure Gauge - GNW Instrumentation

50mm Back Entry Glycerine Filled Pressure Gauge

From £26.00

50mm Bottom Entry Glycerine Filled Pressure Gauge

From £23.00

50mm Back Entry All Stainless Steel Pressure Gauge

From £52.00

50mm Bottom Entry General Purpose Pressure Gauge

From £17.33

50mm Bottom Entry All Stainless Steel Pressure Gauge

From £52.00

50mm Back Entry Industrial Pressure Gauge

From £17.33

50mm Back Entry General Purpose Pressure Gauge

From £17.33

Choosing a 50 mm Pressure Gauge

50 mm pressure gauges provide local indication for machinery, plant and process equipment. It offers slightly more dial area than a 40 mm instrument while remaining practical where installation space is limited.

Choose the range around the normal operating pressure, then confirm the scale units, connection size, thread form and bottom- or back-entry arrangement. Mechanical gauges in this size are specified at ±2.5% FS; check the individual product for its complete specification.

Compare general-purpose, glycerine-filled, industrial and all stainless steel gauges according to the operating conditions and required materials.

Browse pressure gauge accessories for adaptors, mounting components, valves and protection options, or return to all pressure gauges.

50 mm Gauge Selection

50 mm describes the nominal dial diameter, not the pressure range or connection. It offers slightly more dial area than a 40 mm instrument while remaining practical where installation space is limited.

When replacing an instrument, record the full scale, units, thread form, connection size and entry position. Matching the dial diameter alone is not enough.

Mechanical gauges in this size are specified at ±2.5% FS. Because this is based on full scale, consider the resulting allowance at the readings you need to monitor.

50 mm Dial

It offers slightly more dial area than a 40 mm instrument while remaining practical where installation space is limited.

±2.5% FS Accuracy

The accuracy allowance is based on the complete measuring span rather than the current reading.

Construction Choices

Compare dry, filled and material options available in this size, then check the complete product specification.

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Typical Applications

Suitable for local pressure indication, maintenance replacement and equipment builds where a 50 mm dial and the selected specification suit the duty.

Hydraulic Equipment

Used on hydraulic power packs, presses and machinery to monitor circuit pressure during operation, commissioning or maintenance checks.

Pneumatic Systems

Suitable for compressed air lines, regulators and pneumatic control panels where compact pressure indication is required close to the point of use.

Water Services

Applied to pumps, filtration systems and general water pipework for routine pressure monitoring, subject to the gauge materials and pressure range.

OEM Machinery

Specified for new equipment builds where a small pressure indicator is needed for operator checks, service access or equipment diagnostics.

How to Choose

Select the pressure range, choose the required construction, match the connection and confirm that the dial will fit and remain readable.

Pressure Range

Choose a range that covers the normal working pressure and allows safe indication of expected pressure variation without exceeding the gauge rating.

Connection Position

Match the entry style to the installation, such as bottom entry for pipe-mounted use or rear entry where the gauge is fitted into a panel or enclosure.

Media Compatibility

Check that the gauge construction and wetted materials are suitable for the process media, including air, water, oil or other compatible fluids.

Environment and Visibility

Consider vibration, access, lighting and viewing distance. Where conditions are more demanding, a suitable filled or protected gauge may be required.

50mm Gauge FAQs

These common questions help with selection, replacement and installation of compact industrial pressure gauges.

What is a 50mm pressure gauge used for?

A 50mm pressure gauge is used for compact local pressure indication on machinery, pipework, pneumatic panels, hydraulic equipment and water systems where space is limited.

Can I replace an existing gauge with a 50mm model?

Yes, provided the pressure range, connection thread, entry position, mounting style and media compatibility match the existing gauge and the application conditions.

Should I choose bottom entry or back entry?

Bottom entry is commonly used for direct pipe or equipment mounting. Back entry is often selected for panel mounting or where the gauge needs to face out from an enclosure.

When is a glycerine filled 50mm gauge useful?

A glycerine filled gauge can be useful where vibration or pressure pulsation affects pointer stability, provided the filled gauge is suitable for the application and environment.